Method for packing rolling elements in bearing, and use thereof

Patent metadata

Field	Value
Publication number	US-11629758-B2
Application number	US-202117485439-A
Country	US
Kind code	B2
Filing date	Sep 26, 2021
Priority date	Oct 23, 2020
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

A method for packing rolling elements in a bearing providing using a bearing ring fixing component to fix a first bearing ring, preventing it from shifting when subjected to radial compression; inserting two first packing supports between a first bearing ring raceway and a second bearing ring raceway at a predetermined circumferential angle, the two first packing supports dividing the bearing in a circumferential range into a compression zone lying and a warping zone lying outside the range of the circumferential angle; and using a bearing ring compression component to apply a compressive load to a circumferential portion of the second bearing ring. The compressive load directed towards the first bearing ring in a radial direction, to force a radial gap between the first bearing ring raceway and second bearing ring raceway to decrease, such that a window suitable for packing the rolling elements is formed in the warping zone.

First claim

The invention claimed is:

1. A method for packing rolling elements in a bearing, the bearing comprising a first ring and a second ring, the rolling elements being rotatable between a first ring raceway formed on the first ring and a second ring raceway formed on the second ring after assembly, the method comprising the following operations:
using a bearing ring fixing component to fix the first ring, preventing the first ring from shifting when subjected to radial compression;
inserting two first packing supports between the first ring raceway and second ring raceway at a predetermined circumferential angle, the two first packing supports dividing the bearing in a circumferential range into a compression zone lying within the range of the circumferential angle and a warping zone lying outside the range of the circumferential angle; and
using a bearing ring compression component to apply a compressive load to a circumferential portion of the second ring that lies in the compression zone, the compressive load being directed towards the first ring in a radial direction, to force a radial gap between the first ring raceway and second ring raceway in the compression zone to decrease so that a window formed in the warping zone has an opening larger than a diameter of the rolling elements.

2. The method according to claim 1 , wherein the bearing ring fixing component is an abutment component that provides abutment support directed towards the second ring in the radial direction for a circumferential portion of the first ring in the compression zone, thereby forming a balance between an action force and a reaction force with the radial compressive load acting on the circumferential portion of the second ring that lies in the compression zone.

3. The method according to claim 2 , wherein at least one second packing support is additionally provided in a trough value zone, the trough value zone being defined within the radial gap between the first ring raceway and second ring raceway diametrically opposite the compression zone.

4. The method according to claim 3 , wherein the first packing supports and second packing support are each rolling elements of the bearing and are retained in the raceways after assisting with the packing of the other rolling elements of the bearing.

5. The method according to claim 4 , wherein the circumferential angle is between 60 and 90 degrees.

6. A device for packing a plurality rolling elements in a bearing, the bearing having a first ring and a second ring, the first ring defining a first ring raceway and the second ring defining a second ring raceway, the first ring raceway and the second ring raceway being configured to receive a plurality of rolling elements therebetween such that the first ring is rotatable relative to the second ring when the plurality of rolling elements are located therebetween, the device comprising:
a bearing loading platform configured to carry, during assembly of the first ring and the second ring thereon with the first ring and the second ring being positioned to lay flat on the bearing loading platform;
a bearing ring fixing component is positioned on the bearing loading platform and is configured to positionally fix the first ring and prevent the first ring from shifting when subjected to radial compression;
a rolling element carrying ring having an annular structure and a radial size that is substantially the same as a pitch circle diameter of the bearing and is designed to lift the rolling elements to a corresponding axial position between the first ring raceway and second ring raceway; and
a bearing ring compression component that is configured to apply a compressive load to a circumferential portion of the second ring that lies in a compression zone lying within a circumferential angle, the compressive load being configured to be directed towards the first ring in a radial direction, to force a radial gap between the first ring raceway and second ring raceway in the compression zone to decrease so that a window formed in a warping zone has an opening larger than a diameter of the rolling elements, the warping zone laying outside the circumferential angle of the compression zone.

7. The device according to claim 6 , wherein the bearing ring fixing component comprises an abutment component, the abutment component being configured to apply abutment support directed towards the second ring in a radially outward direction and to a circumferential portion of the first ring that lies in the compression zone, thereby forming a balance between an action force and a reaction force, the compressive load providing the action force and the abutment support providing the reaction force.

8. The device according to claim 6 , wherein the rolling element carrying ring further comprises a lifting part located circumferentially and configured for alignment with the warping zone and a blocking part configured for alignment with the compression zone, the lifting part being configured to lift the rolling elements to a corresponding axial position between the first ring raceway and second ring raceway, while the blocking part is configured to have a height different with the lifting part so that the an axial size of the blocking part is greater than that of the lifting part for the purpose of preventing any rolling elements from entering the region between the first ring raceway and the second ring raceway in the compression zone during assembly and to form a limiting structure between the lifting part and the blocking part.

9. The device according to claim 8 wherein the blocking part has a smaller radial thickness at a substantially central portion thereof than at two ends thereof so that the first ring and/or the second ring undergo greater compressive deformation in the compression zone.

10. A combination device for packing rolling elements in a bearing and a plurality of components of a bearing to be manufactured, the combination comprising:
the plurality of components of the bearing including a first ring having a first ring raceway thereon and a second ring, having a second ring raceway thereon, the first ring raceway and the second ring raceway being configured to receive a plurality of rolling elements therebetween such that the first ring is rotatable relative to the second ring when the plurality of rolling elements are located therebetween,
the device having a bearing loading platform for carrying, during assembly, the first ring and the second ring that are positioned thereon with an axis of rotation generally aligned perpendicularly to the bearing loading platform;
a bearing ring fixing component is positioned on the bearing loading platform and is configured to positionally fix the first ring and prevent the first ring from shifting when subjected to radial compression;
two of the plurality of rolling elements form first packing supports disposed between the first ring raceway and second ring raceway at a predetermined circumferential angle, the two first packing supports dividing the bearing in a circumferential range into a compression zone lying within the range of the circumferential angle and a warping zone lying outside the range of the circumferential angle;
a rolling element carrying ring having an annular structure and a radial size that is substantially the same as a pitch circle diameter of the bearing and is designed to lift the rolling elements to a corresponding axial position between the first ring raceway and second ring raceway; and
a bearing ring compression component that applies a compressive load to a circumferential portion of the second ring that lies in the compression zone, the compressive load being directed towards the first ring in a radial direction

Assignees

• Skf Ab

Inventors

• Cao Keqiang
• Zhao Zhiqiang
• Zhang Meng
• Li Qiang
• Zhang Shan

Classifications

• F16C43/08 Primary

  by deforming the cages or the races · CPC title

• F16C43/086 Primary

  by plastic deformation of the race · CPC title

• F16C33/58

  Raceways; Race rings · CPC title